Portable computer



FIG. 1 is a top plan view of a portable computer showing our design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top front and right side perspective view thereof; and,

FIG. 8 is a reduced top front and right side perspective view thereofshown opened and in an operating position.

The ornamental design for a portable computer, as shown and described.